i used to walk my dog down there and past her house all the time. the lady on the right had a wonderful garden. she took a lot of pride in her yard. >> reporter: that yard is now gonna long with 26 others. the owners of these homes will find out tomorrow when they get to return to see the destruction. in the meantime pg and e lined the streets -- they are providing dumpsters for spoiled food, promises to have utilities restored. they are stationed on every corner to answer questions. there is one question they can't yet answer, how could it have happened? julie watts. >> as for the size of the crater it measures 167 feet by 26 feet. they don't know how deep it is because it's to unstable to put anyone inside. >>> services at several services remember victims of the explosion. how the devastated community is trying to heal. at the church in san francisco, the church gathered for sunday mass minus two. >> 15 years. its been a very difficult time for the community and the children in the classroom. >> reporter: that's the two who died in the gas explos